SlrG and AeroSteveO,
I see you are both using SimpleFeatures v1.0.11. I am currently running v1.0.5 and have no such issue.
My WEBUI does stop responding though after ~1 week when WebServer plugin is enabled. could it be the same issue I wonder ... ?
http://lime-technology.com/forum/index.php?topic=23274.0
I will try a few things (maybe update to SF v1.0.11)...